<!doctype html>
<html lang='en'>
<head>
  <meta charset='UTF-8'>
  <meta name='viewport'
        content='width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0'>
  <meta http-equiv='X-UA-Compatible' content='ie=edge'>
  <title>Document</title>
  <link rel='stylesheet' href='../css/bootstrap.min.css'>
  <style>
    .container {
      background: red;
    }
  </style>
</head>
<body>
<div class='container'>
  <div class='col-lg-3'>3</div>
  <div class='col-lg-3'>3</div>
  <button class='btn btn-primary'>测试按钮</button>
</div>
<script src='http://lib.luzhongkuan.cn/js/flexible.js'></script>
</body>
</html>
